ZyXEL Communications 2WG - Manual (Page 238)

ZyWALL 2WG Support Notes
All contents copyright (c) 2006 ZyXEL Communications Corporation.
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D09. Who maintains mySecurityZone & Update Server?
It’s maintained by ZyXEL Security Response Team (ZSRT) who manages backend support from the
beginning of outbreak happen to attack sample collection, analyze it and output it as policy, and finally
make solution of advisory. ZSRT is formed as a group of security experts.
D10. What’s the URL for these service portals?
myZyXEL.com
http://www.myzyxel.com/myzyxel/
mySecurityZone
https://mysecurity.zyxel.com/mysecurity/
For Update Server, there is no interactive login screen available since it communicates with ZyWALL
devices only.
E. Content Filter FAQ
E01. What's the operation between ZyXEL appliance and BlueCoat data center?
Whenever a PC behind ZyXEL appliance issues HTTP requests to some public WEB server. ZyXEL
appliance will forward the request to the targeted WEB server, but also issue an categorization query to
BlueCoat data center. When the HTTP response is back to ZyXEL appliance, the appliance will hold the
response for a while, and wait for the query result from the BlueCoat data center. If the query is not back
within 10 seconds (by default setting), ZyXEL appliance will block (by default setting) the HTTP
response to the PC. If the query is back, ZyXEL appliance will drop or forward the request according to
the Content Filtering policy set in the appliance. The result of categorization query will be cached in
ZyXEL appliance. Later on, HTTP requests to the same WEB server will be inspected by local cache.
E02. How many entries can the cache of Web Site Auto Categorization keep at most?
ZyXEL appliance can keep 1024 entries in the cache at most. Entries that are used less frequently will be
overwritten first when the cache is full. Contents inside the cache will be cleared out after rebooting.
E03. Can I specify the time out value of the query response from BlueCoat data center?
Yes, you can change it on ZyXEL appliance. The default value of the time out is 10 seconds.